View clinical trials related to Strabismus.
Filter by:This study to determine the effectiveness of a combination of pre-surgical laserpuncture with standard anti-emetic therapy for PONV symptoms in adult patients after strabismus surgery under general anesthesia compared to a combination of pre-surgical placebo laserpuncture with standard anti-emetic therapy. Research design using a double blinded randomized controlled trial (RCT) where research subjects and data takers who will be disguised. The research will be carried out in the Operation and Inpatient Room, Kirana Building, RSUPN Dr. Cipto Mangunkusumo (RSCM) with research subjects as adult patients undergoing strabismus surgery under general anesthesia. Assessment of nausea and vomiting using AVS ( Analog Visual Scale) consists of scoring using a score from 1-5 which indicates the severity of nausea and vomiting.
This prospective comparative study aims to compare medial rectus (MR) muscle fenestration and recession in patients with partially accommodative esotropia (PAET). The main question it aims to answer is whether MR fenestration is equally effective as MR recession for PAET. All patients will receive complete ophthalmic and orthoptic assessment. Patients will be randomly allocated using a random table to one of two groups; Group 1 will receive conventional MR recession, and Group 2 will receive MR fenestration.
The aim of this study is to compare between peribulbar block and subtenon block as an adjunct to general anesthesia in children undergoing strabismus surgery on oculocardiac reflex (OCR), post-operative analgesia and postoperative vomiting. Both techniques will be compared to intra-operative intravenous (IV) paracetamol combined with general anesthesia as a sole anesthetic technique.
The current measurement methods of strabismus include the corneal light reflection method, prism alternate covering, etc., which especially rely on the subjective experience of doctors, and there is a large error between different measurers， leading to serious underestimation of strabismus prevalence and insufficient care for strabismus patients. Here, the investigators established and validated an artificial intelligence system to achieve an automatic diagnosis of strabismus based on patient-sourced videos of programmatic cover tests. Three-dimensional reconstruction methods are used to digitize the parameters of head and eye positions. This system has been integrated into a smartphone platform to be further validated through hospital-based and population-based clinical trials.
Strabismus, whether congenital or acquired, is a common visual and cosmetic problem, especially for the young. Adjustable suture strabismus surgery is not in vogue in our country. This technique gives the surgeon a second attempt to provide a better outcome for the patients.
This is a multi-center, randomized double-blind controlled trial to compare the effectiveness of IOBT with IO-Rec for the treatment of hypertropia with IOOA. Specific Aim 1 (Primary): To study the suboptimal surgical rates between IOBT and IO-Rec for the treatment of hypertropia with IOOA. Specific Aim 2 (Secondary): To compare the surgical successful rate of IOBT with IO-Rec for the treatment of hypertropia with IOOA.
A vision therapy protocol for vergence ability is mentioned. The purpose of this study is to evaluate objectively the change in the vergence responses of binocular and accommodative normal subjects after performing a classic vision therapy protocol. This study is an interventional, cross-over, and randomized study.
- This is a prospective randomized clinical study that will be carried on adult patients aged from 21-60 years and presented for strabismus surgery under peribulbar anesthesia. - Patients will be excluded if they refused to participate or had a contraindication to peribulbar anesthesia. - Patients will be randomly distributed into either control group in which peribulbar anesthesia will be performed by injection of 10 ml local anesthetic mixture composed of 4 ml of plain bupivacaine 0.5%, 4 ml of lidocaine 2% containing 50 IU, and 2 ml normal saline or rocuronium group which peribulbar anesthesia will be performed by injection of 10 ml local anesthetic mixture composed of 4 ml of plain bupivacaine 0.5%, 4 ml of lidocaine 2% containing 50 IU, and 0.06 mg/kg of rocuronium in 2 ml normal saline. - Measurements will include; - 1. Patient age, weight, height, gestational age, and gravidity. 2. The duration of globe akinesia (primary outcome). 3. The onset of lid and globe akinesia and the duration of lid akinesia 4. The onset and duration of sensory block 5. Time required to start the surgery 6. Akinesia score 7. The visual analog score (VAS) which is composed of 0-10 score will be used to assess the severity of postoperative pain (where 0=no pain and 10=severe pain), The VAS score will be evaluated 1 h, 2 h postoperative, then every 2 h till 12 h. Any patients with VAS score more than 4 received rescue analgesia in the form of 50 mg tramadol intravenous injection with the calculation of the time for the first call of postoperative analgesia. 8. Any detected complication as nausea and vomiting, pain on injection, or increased intraocular tension.
Strabismus (misalignment of the eyes) often runs in families. In this study, the investigators are looking for genetic variants associated with strabismus and nystagmus. Three types of subects will be enrolled: (1) Families with at least 3 members with strabismus, (2) individuals with infantile esotropia and their parents and siblings, and (3) individuals with infantile nystagmus and their parents. Whole exome and/or whole genome sequencing will be used to identify genetic variants shared by family members with strabismus and to identify genetic causes of nystagmus.
Strabismus is a common ophthalmic problem in Egypt that usually requires surgical correction. This surgery primarily aims to improve alignment of visual axis but may be required only for cosmetic reasons. General anesthesia is mandatory for most cases however a concomitant local anesthetics administration is preferable to improve patient satisfaction, decrease postoperative analgesic requirements and reduce post-operative pain. Oculocardiac reflex is a noted serious complication that accompanies such surgeries and may be life threatening. Oculocardiac reflex (OCR) is one of the main challenges that face anesthesiologists during strabismus surgery. The incidence of OCR varies from 16 to 82 % in strabismus surgeries and this wide range does depend on the anesthetic agents, premedications, and the definition of OCR being used. Maintenance of adequate depth of anesthesia and the use of anti-cholinergic is the mainstay to reduce this risk. OCR is usually defined as a decrease in heart rate of more than 20 % from the baseline. This reflex is triggered by the pressure on the extra ocular muscles (EOM) or eyeball, orbital hematoma or trauma, the afferent limb is from orbital contents to ciliary ganglion then to the sensory nucleus of the trigeminal nerve near the fourth ventricle through the ophthalmic division of the trigeminal nerve. The main response of this reflex is transmitted through the vagus to the heart. This vagal stimulation leads to a decrease in heart rate (sinus bradycardia), contractility and arrhythmias such as atrioventricular block, ventricular fibrillation up to cardiac arrest. The incidence of the OCR decreases with age and tends to be more pronounced in young healthy patients. It has been suggested that the anesthetic agents used during surgery influence the incidence of OCR. To date, the only successful method to interrupt an OCR is to stop the EOM traction, and then proceed with caution as surgery continues. Depth of anesthesia is another presumed factor having an impact on reducing of OCR incidence. The response to surgical stimulus can be minimized or stopped with the help of peribulbar block.